50+ iOS apps curated and reviewed
BSICoS is the household name in bsicos, but it's far from the only option. We track 50+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | Oct 2026 | |
| 2 |  | Free | 5.0★ (6) | No | No | May 2026 | |
| 3 |  | Free | 3.0★ (2) | No | No | May 2026 | |
| 4 |  | $2.99 | — | No | No | Sep 2026 | |
| 5 |  | Free | — | No | No | May 2026 | |
| 6 |  | Free | 5.0★ (1) | No | Yes | Nov 2026 | |
| 7 |  | Free | 3.9★ (19) | No | No | Nov 2026 | |
| 8 |  | Free | 4.5★ (19) | Yes | No | May 2026 |
Calculate kinematic viscosity or drain time for various viscosity cups. Input a known value and cup type to find the unknown, with visual indicators for valid measurement ranges. Helps select the appropriate cup for accurate testing.
This application serves as a calculator for converting viscosity and temperature values for petroleum fuels. It allows users to convert Kinematic Viscosity in Centistokes to desired target values across different temperature scales. In landscape mode, it transforms into a slider for visual comparison of viscosity units.
